[EFL] Revert r129978.

Skip media/unsupported-rtsp.html again, as it still fails on the
bots. I have created a proper bug for the issue now.

* platform/efl/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk/LayoutTests@129980 268f45cc-cd09-0410-ab3c-d52691b4dbfc